I think there are several uncanny valleys that make the market hard to serve:
* many horse paddocks are only a modest multiple of the gps uncertainty for typical hardware * you can't count on cell service in rural areas * no unlicensed wireless technology has a range that is (consistently) a large multiple of the gps uncertainty, so if your horse is ranging in a large area you can't get the signal back * anything you interact with while riding is a no-no because misattention will have you on your ass in no time
The hard part is making it affordable, in a small enough form factor of low weight but with reasonable battery life to matter. And then how to attach it to the animal, using the halter is one idea, but most people don't like leaving a halter on a horse in a pasture for safety reasons. So then how to mount it without interfering with the animals movement or having it get ripped off when the roll or scratch on a tree etc. When you are riding there are ways to do it via the saddle, reins etc, but when they are out grazing it is a tougher problem.
I guess another point though, some riders where safety vests, many wear helmets, so a device for a rider could also be created along the same lines. This would be nice for those trail rides when the horse gets spooked, drops its rider and the rider isn't well enough to walk out. Happens more then people realize.
For $5 one off cost per item and say $15 for the monthly service I'd stick them to pretty much everything.
NB Also depends on size and battery life of tracker and accuracy (e.g. finding a Kindle in a house requires a small tracker and reasonably good accuracy).
This depends on how long does the battery last, and how easily the GPS information is retrievable (APIs, etc)
Also is this based on something like LoRa or SigFox ?
- Laptop
- Car
- Kids (at least until they are teenagers.)
- Wallet
- Keys
- Phone